TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 256 of 1417
G01: VTM CONNECTION AND CHECKOUT (Part 1) - Continued
T0002DAA
AFTER 2 SECONDS
Figure 4.
VTM Display.
CONDITION/INDICATION
Does VTM display .8.8.8.8 and the change to – – ––?
DECISION
YES - Refer to TM 9-6140-200-14 to check vehicle battery specific gravity. Go to Step (1) to restart.
NO - Refer to TM 9-4910-571-12&P for module replacement.
STEP
5.
Perform confidence test.
a.
Dial 66 into TEST SELECT and press and release TEST.
Table
1.
Confidence Test.
TEST NO.
TEST
66
Confidence Test
b.
Check if VTM display and hold 0066.
CONDITION/INDICATION
Does VTM display and hold 0066?
DECISION
YES - Go to Step (7).
NO - Go to Step (6).
TM 9-2320-272-23-2
0188
0188-5
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